Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries
P′2-Na2/3MnO2 is one of the promising candidates of high-capacity positive electrode material showing >200 mAh g−1 for Na-ion batteries. However, it suffers capacity decay during electrochemical cycling. In this study, we used Sc3+ ions ([Ar]4s03d0) as a dopant for P′2-Na2/3MnO2 and successfully...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S138824812500030X |
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| author | Kodai Moriya Shinichi Kumakura Eun Jeong Kim Ryoichi Tatara Shinichi Komaba |
| author_facet | Kodai Moriya Shinichi Kumakura Eun Jeong Kim Ryoichi Tatara Shinichi Komaba |
| author_sort | Kodai Moriya |
| collection | DOAJ |
| description | P′2-Na2/3MnO2 is one of the promising candidates of high-capacity positive electrode material showing >200 mAh g−1 for Na-ion batteries. However, it suffers capacity decay during electrochemical cycling. In this study, we used Sc3+ ions ([Ar]4s03d0) as a dopant for P′2-Na2/3MnO2 and successfully synthesized series of doped materials, P′2-Na2/3[Mn1-xScx]O2. Electrochemical cycle stability of the Sc doped samples in Na cells is successfully improved by the doping without sacrificing reversible capacity. Since Sc3+ ion having no 3d-electrons can be partially substituted for Jahn-Teller active Mn3+ ions ([Ar]4s03d4), loss of the crystallinity over cycling is mitigated through suppressing the structural transformation including Na/vacancy ordering. The finding provides the insight to design the long-life layered cathode materials for Na-ion batteries. |
| format | Article |
| id | doaj-art-ed210b0a8fb64b21878183efffc3e012 |
| institution | DOAJ |
| issn | 1388-2481 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj-art-ed210b0a8fb64b21878183efffc3e0122025-08-20T03:17:57ZengElsevierElectrochemistry Communications1388-24812025-05-0117410789110.1016/j.elecom.2025.107891Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteriesKodai Moriya0Shinichi Kumakura1Eun Jeong Kim2Ryoichi Tatara3Shinichi Komaba4Department of Applied Chemistry, Tokyo University of Science, 1–3 Kagurazaka, Shinjuku, Tokyo 162-8601, JapanDepartment of Applied Chemistry, Tokyo University of Science, 1–3 Kagurazaka, Shinjuku, Tokyo 162-8601, JapanDepartment of Applied Chemistry, Tokyo University of Science, 1–3 Kagurazaka, Shinjuku, Tokyo 162-8601, JapanDepartment of Applied Chemistry, Tokyo University of Science, 1–3 Kagurazaka, Shinjuku, Tokyo 162-8601, JapanCorresponding author.; Department of Applied Chemistry, Tokyo University of Science, 1–3 Kagurazaka, Shinjuku, Tokyo 162-8601, JapanP′2-Na2/3MnO2 is one of the promising candidates of high-capacity positive electrode material showing >200 mAh g−1 for Na-ion batteries. However, it suffers capacity decay during electrochemical cycling. In this study, we used Sc3+ ions ([Ar]4s03d0) as a dopant for P′2-Na2/3MnO2 and successfully synthesized series of doped materials, P′2-Na2/3[Mn1-xScx]O2. Electrochemical cycle stability of the Sc doped samples in Na cells is successfully improved by the doping without sacrificing reversible capacity. Since Sc3+ ion having no 3d-electrons can be partially substituted for Jahn-Teller active Mn3+ ions ([Ar]4s03d4), loss of the crystallinity over cycling is mitigated through suppressing the structural transformation including Na/vacancy ordering. The finding provides the insight to design the long-life layered cathode materials for Na-ion batteries.http://www.sciencedirect.com/science/article/pii/S138824812500030XLayered oxidesManganese oxidesIntercalationNa-ion batteries |
| spellingShingle | Kodai Moriya Shinichi Kumakura Eun Jeong Kim Ryoichi Tatara Shinichi Komaba Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries Electrochemistry Communications Layered oxides Manganese oxides Intercalation Na-ion batteries |
| title | Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries |
| title_full | Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries |
| title_fullStr | Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries |
| title_full_unstemmed | Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries |
| title_short | Electrode performance of P′2-Na2/3[Mn1-xScx]O2 in sodium batteries |
| title_sort | electrode performance of p 2 na2 3 mn1 xscx o2 in sodium batteries |
| topic | Layered oxides Manganese oxides Intercalation Na-ion batteries |
| url | http://www.sciencedirect.com/science/article/pii/S138824812500030X |
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